SMART BATTERY DEVICE, AND ELECTRONIC DEVICE THEREOF

A battery device includes a battery cell and a battery protection circuit. The battery protection circuit includes a microcontroller and a power-supply switch. The microcontroller receives a start signal, a repair signal, and an external-power-indication signal from the outside of the battery device. The power-supply switch is electrically connected to the battery cell. The microcontroller correspondingly outputs an enable signal to the power-supply switch according to the start signal and the repair signal, so that the power-supply switch disconnects the electrical connection between the battery cell and the battery protection circuit. The microcontroller correspondingly outputs a disable signal to the power-supply switch according to the start signal, the repair signal, and the external-power-indication signal, so that the power-supply switch restores the electrical connection between the battery cell and the battery protection circuit.